Once upon a time, there was a shepherd who kept several sheep. One morning, the shepherd discovered that one of his sheep was missing. It turned out that, during the night, a wolf had stolen his sheep through a hole in the sheep pen. The shepherd felt very upset and blamed himself for not fixing the hole in time. His neighbors advised him to repair the sheep pen and plug the hole, but the shepherd refused to accept the advice, thinking that it was too late to fix the problem.
The next morning, the shepherd found another sheep missing. This time, he realized that the wolf had come in from the hole and taken another sheep. He regretted that he had not listened to his neighbors' advice and quickly blocked the hole and repaired the sheep pen. Since then, the sheep have never been stolen by wolves again.
The end.
这个故事告诉我们，当问题出现时，我们应该及时采取行动去解决它，而不是等到问题变得不可收拾才后悔。